Inventor
OHSHITA YOUICHI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “OHSHITA YOUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
18 patentsUS5214595AMay 25, 1993
Abnormality diagnosing system and method for a high voltage power apparatus
HITACHI LTD91 citations95
US5107447AApr 21, 1992
Abnormality diagnosing system and method for a high voltage power apparatus
HITACHI LTD88 citations95
US4716491ADec 29, 1987
High frequency plasma generation apparatus
HITACHI LTD110 citations95
US6333715B1Dec 25, 2001
Partial discharge detector of gas-insulated apparatus
HITACHI LTD33 citations92
US5850065ADec 15, 1998
Gas circuit breaker
HITACHI LTD24 citations92
US5473494ADec 5, 1995
Electrical power supply system
HITACHI LTD26 citations92
US4865709ASep 12, 1989
Magnetron sputter apparatus and method for forming films by using the same apparatus
HITACHI LTD38 citations92
US4673482AJun 16, 1987
Sputtering apparatus
HITACHI LTD33 citations92
US5543597AAug 6, 1996
Grounding switch gear device
HITACHI LTD41 citations89
US4864286ASep 5, 1989
Switch operation monitoring apparatus
HITACHI LTD13 citations74
US6005213ADec 21, 1999
Insulated type switchgear device
HITACHI LTD7 citations72
US5952636ASep 14, 1999
Vacuum type switch gear device having L shaped stationary and movable conductors arrangement
HITACHI LTD7 citations72
US5777842AJul 7, 1998
Transformer station and breaker apparatus
HITACHI LTD11 citations72
US5391930AFeb 21, 1995
Circuit breaker with parallel resistor
HITACHI LTD8 citations71
US5502290AMar 26, 1996
Switch mechanism
HITACHI LTD5 citations63
US5837955ANov 17, 1998
Gas circuit breaker
HITACHI LTD3 citations62
US5155312AOct 13, 1992
Puffer type gas circuit interrupter
HITACHI LTD4 citations62
US4423298ADec 27, 1983
Gas circuit breaker of resistance breaking type
HITACHI LTD5 citations62